查询词典 inorganic acid

A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprising: a component of anions, each of said anions consisting of at least four fluorine atoms and at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, and boron, and, optionally, ionizable hydrogen atoms, and optionally, one or more oxygen atoms; a component of cations of elements selected from the group consisting of cobalt, magnesium, manganese, zinc, nickel, tin, zirconium, iron, and copper; the ratio of the total number of cations of this component to the total number of anions of component being at least 1:5; sufficient free acid to give the composition a pH in the range from 0.5 to 5.0; a component selected from the group consisting of phosphorus-containing inorganic oxyanions and phosphonate anions; and a component selected from the group consisting of water-soluble and water-dispersible organic polymers and polymer-forming resins and, preferably, also including a component selected from the group consisting of tungstate, molybdate, silicotungstate, and silicomolybdate anions.

通过对包含以下成分的含水酸性液体进行干燥，可以在金属上形成无铬的转换涂层，该涂层与普通铬酸盐转换涂层相比，至少在抗腐蚀质量上等效：$_一种阴离子成分，所述各个阴离子包括至少4个氟原子，至少选自钛、锆、铪、硅与硼元素中的1个原子。任选地可离解的氢原子，任选地1个或多个氧原子；$_一种选自钴、镁、锰、锌、镍、锡、锆、铁与铜元素的阳离子成分，上述成分的阳离子总数与成分内的阴离子总数之比至少为1∶5；$_足够的游离酸以使该组合物的pH值在0.5～5.0的范围内；$_一种选自含磷的无机含氧阴离子与膦酸盐阴离子的成分；$一种选自水溶性与水可分散性有机聚合物与聚合物形成的树脂的成分，优选还包括一种选自钨酸盐、钼酸盐、钨硅酸盐与钼硅酸盐阴离子的成分。

The results indicate that different molecular weight of dextran could be obtained by direct fermentation,and the acid hydrolyzing in the old technology be avoided.The yield reached the maximum by controlling the pH value to be 8.0,and the inorganic salt could promote the growth of the Leuconostoc mesenteriodes with the effect of promotion being Mn2++Ca2+＞Mn2+＞Ca2+.

结果表明：通过定向发酵技术可得到符合要求的不同分子量的右旋糖酐，避免了老工艺中酸水解工艺；控制发酵培养基pH值为8.0，可使产率最大；无机盐离子Mn2+和Ca2+能促进L.M菌的生长，其促进菌生长的程度大小依次为：Mn2++Ca2+＞Mn2+＞Ca2+。

The main flavour components, betaines, inorganic ions such as K+, Na+, Ca2+, Fe2+, Zn2+, PO3-4and Cl-and free amino acid in the raw Ommastrephes bratrami were extracted by hot water, 80% ethanol, cold water or 80% ethanol after cold water.

日本早在70年代就曾对一些名贵水产品(如柔鱼、鲍鱼、龙虾和蟹等)中的主要呈味成分进行过研究[1]，并以此为依据开发研制出多种模拟海味食品。1999年中国在北太平洋捕捞柔鱼的总产量虽然高达13 2万t[2]，但目前国内仅利用柔鱼制造柔鱼干、柔鱼丝、薰制品、罐头制品等，利用价值较低，对于这些制品的呈味成分的研究，国内尚未见报道。

Experimental studies have been conducted on the decomposition efficiency of four different types of organic and inorganic phosphorus compounds in seawater under acid or basic condition by persulphate oxidation.

实验研究在碱性和酸性条件下过二硫酸钾高温氧化四种不同类型含磷标准化合物在海水中的回收率和影响回收率的因素。

Experimental studies have been conducted on the decomposition efficiency of four different types of organic and inorganic phosphorus compounds in seawater under acid or basic condition by persulphate oxidation.

摘 要 实验研究在碱性和酸性条件下过二硫酸钾高温氧化四种不同类型含磷标准化合物在海水中的回收率和影响回收率的因素。

Experimental research conducted on the decomposition efficiency of four different types of organic and inorganic phosphorus compounds in seawater under acid or basic condition by persulphate oxidation.

实验研究在碱性和酸性条件下，过二硫酸钾高温氧化四种不同类型含磷标准化合物在海水中的回收率和影响回收率的因素。

Benzyl phenylacetate was synthesized by benzyl chloride with the salt prepared by phenylacetic acid and Na2CO3 under microwave irradiation and in presence of phase transfer catalyst without any organic solvent and inorganic carrier.

采用微波辐射相转移催化技术，以四丁基溴化铵为相转移催化剂，先将苯乙酸与碳酸钠成盐，在无有机溶剂和无机载体的条件下与氯化苄直接酯化合成苯乙酸苄酯。

By the solution self-organization, two kinds of organic-inorganic complexes of phosphotungstic acid with chitosan and chitosans degraded were prepared.

本论文提出两种降解制备水溶性壳聚糖的新方法：(1)UV-H_2O_2联合制备水溶性低聚壳聚糖：(2)在壳聚糖-水异相体系中，磷钨酸催化H_2O_2制备水溶性低聚壳聚糖。

A series inorganic high molecular flocculants zinc polysilicate is prepared by using polysilicic acid and zinc sulfate as raw materials.

以聚硅酸、硫酸锌为原料制备了系列无机高分子絮凝剂聚硅酸锌。

It was proved by IR spectroscopy that Zn2+ and hydrolyzed ion were chelated with polysilicic acid to produce the polymer of zinc-silicon. The reaction was not the simple physical blending,but the chemical reaction forming the inorganic polymer with special structure.

红外光谱证实了PZSS中Zn2+及水解Zn2+离子可与共存的聚硅酸起螯合反应生成锌硅聚合物，聚硅酸与Zn2+反应并不是单纯的物理混合加成作用，而是形成了具有特殊结构的无机高分子的化学反应，这种新型絮凝剂所具有的优良絮凝特性是由各物质间以化学作用为主的物理化学因素共同作用的结果。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。